Facebook now accounts for one out of every five minutes people spend on mobile phones in the US, the social network revealed, as it unveiled second-quarter results.

Users also spend an average of 46 minutes a day on Facebook's apps, excluding the massively popular messaging service WhatsApp, with people making 1.5bn searches a day on the site. It has also indexed more than two trillion posts.

The figures announced by Facebook, led by founder Mark Zuckerberg, shows its growth in popularity, with 1.49bn monthly active users as of June 30, up 13% from a year earlier. Of these, 1.31bn accessed the service through mobile devices, a rise of 23%.

Asking for $500,000, the museum has already raised more than a fifth of its goal to conserve the iconic spacesuit that Neil Armstrong wore when he became the first person to set foot on the Earth’s moon.

As it stands, the 21-layer spacesuit is among the museum’s most fragile artifacts, stored in a climate controlled storage area where, despite every measure to protect it, the suit’s material has slowly begun to decay and its colors fade. On top of that, this storage unit is necessarily restricted to public access. But, with its $500k, the Smithsonian will conduct chemical analysis, CT scans, photogrammetry, 3D scanning, and other processes, along with consultations with the original designers of the suit, to ensure that it is preserved “down to the particles of lunar dust that cling to its surface.”

Once complete, the Smithsonian will display the suit on the 50th anniversary of the Moon Landing, July 20, 2019, before being transferred to their Destination Moon exhibit, which will open in 2021.

To test the impact of travel in a drone on the blood, the researchers took over 300 samples of blood (six each from 56 volunteers), and drove them to a site an hour away.

Then half the blood samples were packaged for drone flights, and flown in the air between six and 38 minutes in a hand-tossed drone.

After their flights the samples were unloaded, then all the samples--including the ones that didn't take a trip in the drone--were driven back to the hospital for testing, where they were tested normally.

No meaningful differences were found between flown and unflown samples.

With the proof of concept done, future research could test the idea in rural areas, where drones could deliver medicine to testing centers far away, and more quickly than by car or on foot.